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Doppler flow velocity waveforms in the fetal ductus arteriosus during the first half of pregnancy: a reproducibility study
Author(s) -
Brezinka C.,
Stijnen T.,
Wladimiroff J. W.
Publication year - 1994
Publication title -
ultrasound in obstetrics and gynecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.202
H-Index - 141
eISSN - 1469-0705
pISSN - 0960-7692
DOI - 10.1046/j.1469-0705.1994.04020121.x
Subject(s) - medicine , reproducibility , ductus arteriosus , flow velocity , acceleration , waveform , gestational age , doppler effect , diastole , gestation , ultrasound , fetus , blood flow , cardiology , pregnancy , radiology , physics , blood pressure , mathematics , statistics , classical mechanics , quantum mechanics , voltage , biology , genetics , relaxation (psychology) , astronomy
Reproducibility of flow velocity waveform measurement in the fetal ductus arteriosus was studied in 52 normal pregnancies between 11 and 25 weeks of gestation. The flow velocity parameters studied were the peak systolic velocity, mean velocity, end‐diastolic velocity, flow velocity integral and acceleration time. In each woman two consecutive measurements were performed with a time delay of 15 min. An acceptable reproducibility was achieved for all flow velocity parameters, except for the acceleration time and end‐diastolic velocity. Copyright © 1994 International Society of Ultrasound in Obstetrics and Gynecology